Outdoor Play Area, Wood, Human, Person, Plant, Grass, Toy, Swing, isolation, contamination, outbreak, pandemic, prevention, quarantine, signal, tape, corona, epidemic, infection, warning, alert, crisis, flu, risk, stop, public, virus, covid19, emergency, slide, disease, recreation, safety, covid, protection, 2020, caution, medical, outside, coronavirus, playground, sand, swing, closed, danger, forbidden, empty, restriction, white, red, nobody, prohibited, ban, equipment, outdoor, park, covid-19, lockdown, checkup, aureole, diaphragm, soil, imprisonment, respiratory disease, commoner, sign, juncture, influenza, plate glass, strip, earth, work, microorganism, decree, sheet, impurity, sagacity, jeopardy, mechanism, investigation, infectious agent, crimson, document, illness, resort area, prohibition, hazard, wisdom, ill health, difficulty, diversion, cipher, know-how, separation, contagious disease, world, care, readiness, limitation, light, confinement, populace, radiance, rule, informing, judiciousness, person, writing, hindrance, situation